Received 5 July 2010
In the title polymeric complex, [Cd(C5H3N6)(C2O4)0.5(H2O)]n, the CdII ion is coordinated by four O atoms and three N atoms from two 5-(pyrazin-2-yl)tetrazolate ligands, two oxalate ligands and one water molecule, displaying a distorted monocapped octahedral geometry. The bridging ligands link metal centres, forming a three-dimensional network which is stabilized by intermolecular O-HN hydrogen-bonding interactions.
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008b); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008b); molecular graphics: SHELXTL (Sheldrick, 2008b); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RZ2474 ).
The author acknowledges South China Normal University for supporting this work.
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